Lower stop assembly for quick release slide fasteners

A lower stop assembly for quick release slide fasteners, comprising a left stop member and a right stop member, the outsides of the left stop member and the right stop member being connected with a left slide fastener belt and a right slide fastener belt, respectively, the inside of the right stop member being provided with a right slot and an annular orifice both extending in the direction of the inside, the annular orifice being located at the front end of the right slot and in direct communication with an opening of the right slot, a lateral notch disposed on the right slot facing the inside of the right member, the top end portion of the left stop member being able to be inserted into the annular orifice when the left stop member is inserted into the opening of the right slot, wherein the left stop member comprises:

• an inside wall portion that can be inserted into the opening of the right slot, an outside wall portion connected with the left slide fastener belt and a middle transition portion located between the inside wall portion and the outside wall portion, the thickness of the inside wall portion of the left stop member being greater than that of the middle transition portion;
• and a first portion of the lateral notch at a top end of the right stop member of the right slot is provided with an upper extension arm and a lower extension arm at an outer end of the first portion of the lateral notch, the two extension arms extending toward each other, a clearance space of first portion of the lateral notch being less than a thickness of the inside wall portion but greater than a thickness of the middle transition portion, a spacing of a second portion of the lateral notch at a bottom end of the right stop member of the right slot being greater than the thickness of the inside wall portion.